Commonwealth Mining and Metallurgical Congress Southern Africa & South African Institute of Mining and Metallurgy. (1961). Transactions of the Seventh Commonwealth Mining and Metallurgical Congress: Papers and discussions. South African Institute of Mining and Metallurgy.
Cytowanie według stylu Chicago (wyd. 17)Commonwealth Mining and Metallurgical Congress Southern Africa i South African Institute of Mining and Metallurgy. Transactions of the Seventh Commonwealth Mining and Metallurgical Congress: Papers and Discussions. Johannesburg: South African Institute of Mining and Metallurgy, 1961.
Cytowanie według stylu MLA (wyd. 8)Commonwealth Mining and Metallurgical Congress Southern Africa i South African Institute of Mining and Metallurgy. Transactions of the Seventh Commonwealth Mining and Metallurgical Congress: Papers and Discussions. South African Institute of Mining and Metallurgy, 1961.